The Year of Living Biblically: One Man's Humble Quest to Follow the Bible as Literally as Possible by AJ Jacobs. It's about the author's attempt to live Biblically (and sometimes too literally) according to the Bible.
One particular quip was the difficulty of him learning how to pray and that the only times that the words God and Lord occurred were after "Oh my" and before "of the rings" respectively.
That made me think that our vocabulary does reflect the way we think.
Do we use the words "righteousness" often? How often do we tell our friends, "that isn't righteous" or think to ourselves how can we become more righteous?
Instead the media and society are often times filled more with 4 letter words of the obscene kind.
The more we listen to those words instead of thinking of spiritual words, the more earthly we become. But the obverse is true, the more we think good words, words that have become outfashioned by the world but remain eternal in value the more of eternity we embed in ourselves.